Drive comparison
ST16000NM003G vs HDWG81GXZSTB
Seagate Exos X16 16TB and Toshiba N300 Pro 16TB, compared using published manufacturer specifications.
Seagate
Exos X16 16TB
ST16000NM003G
SATA 6 Gb/s · 3.5-inch
$720.99
Amazon US · New listing ↗ASIN B081TFV22Y · as of Sep 12, 2026 04:47 UTC
Full specifications & all listings →Toshiba
N300 Pro 16TB
HDWG81GXZSTB
SATA 6 Gb/s · 3.5-inch
Check current Amazon price
Amazon US · Verified product · check availability and condition on Amazon ↗ASIN B0H1NC62DB
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What differs between these models?
- Cache (MB): ST16000NM003G lists 256; HDWG81GXZSTB lists 1024.
- Sustained transfer (up to MB/s): ST16000NM003G lists 249; HDWG81GXZSTB lists 294.
A larger cache, higher RPM or higher advertised sequential speed alone does not establish which drive is better for your workload.
Specifications side by side
| Specification | ST16000NM003G | HDWG81GXZSTB |
|---|---|---|
| Manufacturer | Seagate | Toshiba |
| Product family | Exos X16 | N300 Pro |
| Model number | ST16000NM003G | HDWG81GXZSTB |
| Capacity (TB) | 16 | 16 |
| RPM | 7200 | 7200 |
| Interface | SATA 6 Gb/s | SATA 6 Gb/s |
| Cache (MB) | 256 | 1024 |
| Form factor | 3.5-inch | 3.5-inch |
| Average idle power (W) | 5 | Not recorded |
| Power-on hours per year | 8760 | Not recorded |
| Manufacturer limited warranty | 5 years (eligible new drives) | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 249 | 294 |
| NAS bays | Not recorded | 24 |
| Recording | Not recorded | CMR |
| Sector format | Not recorded | 512e |
| Idle power (W) | Not recorded | 3.66 |
| Package / region | Not recorded | US retail; manufacturer-documented bulk package alias |
| Workload rating (TB/year) | Not recorded | 550 |
| Average operating power (W) | Not recorded | 6.94 |
| Rotational vibration sensors | Not recorded | Yes |
Compatibility and buying checks
- Check sector-format support in the controller and operating system, particularly for native 4K (4Kn) variants.
- Compare new and renewed offers separately. The manufacturer specification does not guarantee the warranty or return policy of a marketplace seller.
Manufacturer sources
ST16000NM003G
Seagate Exos X16 manufacturer specifications ↗ · pages 2
Reviewed 2026-09-07. Published specifications; no independent benchmark or failure-rate claim.
HDWG81GXZSTB
Toshiba N300 Pro US datasheet TAEC-2839-R2.0, July 2026 ↗ · pages 4, 7
Reviewed 2026-09-08. Published specifications; no independent benchmark or failure-rate claim.